/*
 * Copyright (C) 2017-2018 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#import "config.h"
#import "WebBackgroundTaskController.h"

#if PLATFORM(IOS_FAMILY)

@implementation WebBackgroundTaskController

+ (WebBackgroundTaskController *)sharedController
{
    static WebBackgroundTaskController *sharedController;
    if (!sharedController)
        sharedController = [[self alloc] init];
    return sharedController;
}

- (void)dealloc
{
    [_backgroundTaskStartBlock release];
    [_backgroundTaskEndBlock release];
    [super dealloc];
}

- (NSUInteger)startBackgroundTaskWithExpirationHandler:(void (^)())handler
{
    if (!_backgroundTaskStartBlock)
        return _invalidBackgroundTaskIdentifier;
    return _backgroundTaskStartBlock(handler);
}

- (void)endBackgroundTaskWithIdentifier:(NSUInteger)identifier
{
    if (!_backgroundTaskEndBlock)
        return;
    _backgroundTaskEndBlock(identifier);
}

@end

#endif
